Advantech PCN-6351 Series Manuel d'utilisateur télécharger pdf (Page 12)

Chapter 1 Hardware Configuration 9

1.6 Clock Speed Setup

1.6.1 CPU frequency ratio setting (SW1)

Clock speed setup procedure:

1. Check your CPU speed and type (eg. Intel

P-133).

2. From a suitable CPU relationship chart, find your CPU's corre-

sponding clock speed and frequency ratio setting (eg. 133 MHz =

66 MHz x 2).

3. Set the CPU's frequency ratio on SW1, and consult your CPU's

manufacturer for any further information regarding your selection.

Table 1-2: CPU frequency ratio setting (SW1)

Frequency ratio Pin 1 Pin 2 Pin 3

1.5 OFF OFF OFF

2 ON OFF OFF

2.5 ON ON OFF

3 OFF ON OFF

3.5 OFF OFF OFF

4 ON OFF ON

4.5 ON ON ON

5 OFF ON ON

5.5 OFF OFF ON

1.6.2 Select cache RAM mode (SW1)

Table 1-3: Select cache RAM mode (SW1)

Cache RAM mode Pin 4

Normal OFF

NS linear mode ON

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 100 101

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Advantech PCN-6351 Series Manuel d'utilisateur Page 12